复杂环境盾构工作井基坑实测结果研究

Study on Monitoring Data of a Shield Work Well in Complex Environment

复杂环境下如何确保深基坑开挖过程中自身稳定及周边环境安全是迫切需要解决的问题之一,文中对广州某深基坑工程支护结构进行多项动态实测,探讨基坑开挖过程中支护结构的力学行为机理,明确了周围环境受扰动情况,同时对地下水位变化进行了分析,明确了流砂和地下水位急剧下降的内在原因,且提出防护加固措施。

Ensuring the safety of foundation pit and its surrounding environment in complex environment is a key problem to be urgently solved. Based on the monitoring data of a foundation pit in Guangzhou,comprehensive analysis of the deformation and mechanism of retaining structures was conducted,and the disturbrance on surrounding environment during excavation as well as the variation of underground water level was analyzed to explain the phenomenon of quicksand and a sharp decline in groundwater level,and then timely measures were taken to settle the problems.